Pre-mix Concrete Competitive Tender Procurement of pre-mix concrete for the construction of a double Larinier fish pass on Ballsgate weir, Aymestrey, Herefordshire. Location: NGR SO417660, Post code HR6 9UT Introduction During June, July and August 2018 the Wye and Usk Foundation will be construction a double larinier fish pass on Ballsgate weir as part of the ERDF funded DNMP project. The weir is owned by the Environment Agency. The work will be undertaken by Wye and Usk Foundation staff run by a CDM and NEBOSH trained Head of Operations, overseen by a Clerk of Works. The fish pass has been designed by Fishtek consulting (Annex 1). The landowners have consented to access and a work compound being established Relevant consents have been secured by EA which are provisional to the appointment of a Clerk of Works to oversee the construction. The working timeline for the works is: Milestone Date Appointment of a Clerk of Works and Coffer dam contractors 14th May Secure all consents 10th June Finalise method statement 16th June Establishment of site compound 1st July Install coffer dam and dry site 5th July Start construction of fish pass structure 8th July Completion of fish pass structure 9th August Installation of Larinier 16th August Completion of installation of rip rap 23rd August Completion of smolt notch 28th August Remove all materials from site and restore to previous state 4th September Open fish pass 15th September Task we are seeking to procure: We are seeking supply of circa 44m3 of ready mix concrete that- Complies with BS 8500-2 RC to have minimum strength class of C35/45 Structure life 100yrs Max W/C ratio 0.40 Min. cement (kg/m3) 380 Max cement content (kg/m3) 430 Cement or combination types CEM lll/A C111 Chloride class 0.2 Max agg. Size 20mm Min sand content N/A Min air content N/A Additives 0.91kg/m3 fibrin or cemfiber polypropylene micro fibres Colour: TBC5 Target slump (mm) 100 Slump range (mm) +25 to -25 Pump able mix option req: yes Accelerated early strength mix option req: yes Minimum cover: 60 Identify testing (sampling rate) 1 per hour. Tendering process. Opens: 18th April 2019 Closes: 10th May 2019 Requirements for tender: - Confirmation of capability - Confirmation of availability Tenders to be sent to Simon Evans by email. Supporting Documents Annex 1a Site Plan Annex 1b Site Plan Annex 1c Site Plan Annex 2 Draft Method Statement Ballsgate Fishpass